Is not a highly ionized field of gases also subjected to high temperature and pressure? In other words, a plasma? Does not a plasma want to expand? If so, it wouldn't want to expand due to a temperature and pressure decrease or while maintaining a state of equilibrium, would it? Or, would it?

And the iron or other catalyst used in the Haber-Bosch process (ruthenium), for example, is an electron intermediary serving in a capacity similar to an equivalent result obtained from sustaining a high positive voltage field producing mono-atomic nitrogen and hydrogen ions?

I think your use of water is another way to mono-atomize the nitrogen and hydrogen. It conforms to Sir Humphry Davy' quote, oft used by Aaron, that...

A catalyst is an electron donor and/or receptor, used over and over. But a high voltage is a field sustained by the driving mechanism surrounding the field. So long as the field is sustained, catalysis will continue regardless of how it is sustained: whether chemically by the presence of iron, or electrostatically by a high voltage, positively charged field.

The only objective method of settling this difference of opinion is to test out any design in an environment free of nitrogen. In other words, the air intake for the engine has to be fed pure oxygen, and the air gap in the fuel tank and fuel lines - aka, where ever there is a gaseous gap or the presence of gaseous bubbles in the fuel - has to also be exclusively pure oxygen, and the water has to be pre-boiled and resuffused with oxygen alone while allowed to raise to room temperature before filling the fuel tank with it and also before running the test.

This test would have to be the most common grueling test for any so-called water fed engine - the same test for any other standard car: idled with an inertial load to replicate the condition of driving up a steep hill for a lengthy period of time.

For ammonia production you need hydrogen and nitrogen. Old method Haber-Bosch use high pressure and high temperature. The only way for another method of ammonia production from water is use an catalyst (or two) and an NEW method for water dissociation. Stan Meyer with the latest fuel injector patent was near to understand the process but don't have sense use the air
as electron absorber like an catalyst.. air isn't an catalyst!! And in fact I can't se at today an car working with the Stan Meyer technology. My vision is that in the near future we can use water molecules in an loop mode device for the energy creation similarry to Lyne furnace for production of electricity and heat at the same time.